22 



COMPARATIVE ZOOLOGY. 



[Jan. 



REPORT ON THE CRUSTACEA. 



By Walter Faxon, Assistant in the Zoological Laboratory. 



The early part of the year was employed in determining 

 and arranging the fossil Crustacea, A set, including the 

 principal genera represented in the collection, has been 

 mounted on tablets, and is now exhibited to the public. This 

 collection is especially rich in species from Solenhofen and in 

 North American and Bohemian Trilobites, 



The work of identifying the recent species has been begun 

 and carried through the Oxyryncha. A collection of one 

 hundred and thirty-seven species has lately been returned 

 from the Jardin des Plantes. The Maioids from the dredg- 

 ings of Stimpson and the "Hassler," sent to Paris in the 

 spring of 1874, have also been returned. Among these are 

 types of seven new genera and twelve new species, described 

 by M. Alphonse Milne-Edwards. 



The most valuable additions to the department during the 

 year are the interesting forms dredged in Lake Titicaca by 

 Mr. Agassiz, in Lake Superior by the United States Lake 

 Survey, and the collection of Bohemian Trilobites from Bar- 

 rande. 



New material has been derived from the following sources : — 



Agassiz, A. Eight Palsemon Graudichaudii from Arequipa, Peru ; 

 Amphipoda and Cyprids dredged in Lake Titicaca ; mixed lot 

 from the Isles of Pearls, Panama Bay. 



Barrande, J. One hundred and ninety species, 3,492 specimens of 

 Trilobites from Bohemia. (From the Gray Fund.) 



Boll, J. Five species, 27 specimens from Dallas, Texas. 



Carleton, Rev. M. M. Estherise from Kooloo Valley, N. India. 



CoMSTOCK, Gen. C. B. Five species from Lake Superior. (U. S. 

 Lake Surve3\) 



Gabb, W. M. Nine fossil Crustacea from San Domingo. 



